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Unfortunately, the new swine flu virus can be transmitted between humans. It is not clear yet how easily it is transmitted, nor how it is transmitted. Almost surely it is transmitted by sneezing and coughing, and by skin-to-skin contact with an infected person.
How is the swine flu virus transmitted according to the passage

A. It is very easily transmitted from person to person.
B. It is not quite sure how it is transmitted yet.
C. It is surely transmitted by sneezing or coughing.
D. It is surely transmitted by skin-to-skin contact.
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Two major findings have emerged from these researches. Firstly, the greater part of the development of observed intelligence occurs in the earliest years of life. It is estimated that 50 percent of measurable intelligence at age 17 is already predictable by the age of four. Secondly, the most important factors in the environment are language and psychological aspects of the parent-child relationship. Much of the difference in measured intelligence between privileged and disadvantaged children may be due to the latter’s lack of appropriate verbal stimulation and the poverty of their perceptual experiences. The paragraph mainly talks about
A. observed intelligence occurs in the earliest years of life.
B. the importance of language and psychological aspects of the parent-child relationship.
C. the two major findings from the recent researches on intelligence.
D. lack of appropriate verbal stimulation leads to children’s disadvantage in intelligenc
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In addition to his theory of color, Newton developed a theory of how light travels. This is known as the corpuscular theory of light, meaning that light travels as a series of tiny bits rather than in continuing waves. Newton sent his writings to the Royal Society where they were given to a committee led by Hooke. Since the corpuscular theory was different from his own theory, Hooke attacked the paper. Soon others started to argue, and Hooke was supported by a scientist from Holland, Chritain Huygens. At one time, Newton was so unhappy with the whole affair that he decided never again to publish any of his work. The bitter argument continued over the years that followed. At first, Hooke and Huygens received most of the support. Later, after Newton had changed his mind and let his work on gravity be published, he became so famous that things changed. Now people believed Newton could do nothing wrong, and for a hundred years they followed his theory. Then, in the early part of the 19th century, the experiments of a French scientist, Augustin Fresnel, showed that light could be explained best by a wave theory. So the scientists changed sides again, saying that Newton’s ideas had delayed scientific progress for a hundred years. Newton’s publishing ofhis work on gravity resulted in that
A. Newton became the best known scientist.
B. his corpuscular theory of light was accepted.
C. scientists would believe in Newton only.
D. most people have supposed Newton till now.
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